text: // Copyright 2009 the Sputnik authors.  All rights reserved.
  // This code is governed by the BSD license found in the LICENSE file.
  
  /**
  * @name: S15.5.4.15_A2_T4;
  * @section: 15.5.4.15;
  * @assertion: String.prototype.substring (start, end) returns a string value(not object);
  * @description: start is Infinity, end is NaN;
  */
  
  var __string = new String("this is a string object");
  
  //////////////////////////////////////////////////////////////////////////////
  //CHECK#1
  if (__string.substring(Infinity, NaN) !== "this is a string object") {
    $ERROR('#1: __string = new String("this is a string object"); __string.substring(Infinity, NaN) === "this is a string object". Actual: '+__string.substring(Infinity, NaN) );
  }
  //
  //////////////////////////////////////////////////////////////////////////////
  